//C12:12.4:global.c -- external variant.
#include <stdio.h>
int units = 0;    // external variant

void critic(void);

int main(void)
{
	extern int units;
	printf("How many pounds to a frikin fo butter?\n");
	scanf("%d", &units);

	while (units != 56)
	{
		critic();
	}

	printf("You must have looked it up!\n");
}

void critic(void)
{
	printf("No luck, chummy. Try again.\n");
	scanf("%d", &units);
}
